摘要：Visual information and prior knowledge represent two different sources of predictability for
tasks which each have been reported to have a beneficial effect on dual-task performance.
What if the two were combined? Adding multiple sources of predictability might, on the one
hand, lead to additive, beneficial effects on dual-tasking. On the other hand, it is conceivable that multiple sources of predictability do not increase dual-task performance further, as
they complicate performance due to having to process information from multiple sources. In
this study, we combined two sources of predictability, predictive visual information and prior
knowledge (implicit learning and explicit learning) in a dual-task setup. 22 participants performed a continuous tracking task together with an auditory reaction time task over three
days. The middle segment of the tracking task was repeating to promote motor learning,
but only half of the participants was informed about this. After the practice blocks (day 3),
we provided participants with predictive visual information about the tracking path to test
whether visual information would add to beneficial effects of prior knowledge (additive effects
of predictability). Results show that both predictive visual information and prior knowledge
improved dual-task performance, presented simultaneously or in absence of each other. These
results show that processing of information relevant for enhancement of task performance is
unhindered by dual-task demands.
关键词：Action and perception;Auditory processing;Implicit learning;Visual perception
